Attoohm is 1e-18 ohm units.
Attoohms to Kiloohms Converter — aOhm to kOhm
Convert Attoohm (aOhm) to Kiloohm (kOhm) using the exact conversion factor (1 attoohm = 1e-21 kiloohm). See the formula, worked examples, and conversion table.
Attoohms to Kiloohms converter
Converter
Electricity Converter
Convert electrical units by family and calculate voltage, current, resistance, power, and energy with context values.
Context values
Some unit families need one extra value for a physically accurate result.
Kiloohm is 1000 ohm units.
Result = input x 1e-18 / 1000.
Electrical units in the same family convert directly.
Reserved above the conversion cards and below the converter.
About Converting Attoohms to Kiloohms
Attoohm and Kiloohm both belong to the electricity family — voltage, current, resistance, power, or energy — units that show up constantly when working across the different standards used by household wiring (120V/240V depending on region), automotive electrical systems (12V/24V), and electronics design. Specifically: Attoohm is 1e-18 ohm units, and kiloohm is 1000 ohm units.
Formula
kiloohms = attoohms × 1e-21
This factor comes from each unit's defined relationship to the category's base unit: 1 attoohm equals 1e-18 base units, and 1 kiloohm equals 1000 base units, so dividing one by the other gives the direct attoohm-to-kiloohm factor of 1e-21.
Simple example
1 aOhm × 1e-21 = 1e-21 kOhm
1 attoohm = 1e-21 kiloohms.
Real-world example
120 aOhm × 1e-21 = 1.2e-19 kOhm
120 attoohms = 1.2e-19 kiloohms.
Conversion table
| Attoohm (aOhm) | Kiloohm (kOhm) |
|---|---|
| 1 aOhm | 1e-21 kOhm |
| 5 aOhm | 5e-21 kOhm |
| 12 aOhm | 1.2e-20 kOhm |
| 24 aOhm | 2.4e-20 kOhm |
| 120 aOhm | 1.2e-19 kOhm |
| 240 aOhm | 2.4e-19 kOhm |
Reverse conversion: Kiloohm to Attoohm
1e-21 kOhm × 1e+21 = 1 aOhm
1e-21 kiloohms = 1 attoohms.
attoohms = kiloohms × 1e+21
For a page dedicated to this direction, see Kiloohm to Attoohm.
Understanding the Attoohm (aOhm)
Attoohm is 1e-18 ohm units.
Understanding the Kiloohm (kOhm)
Kiloohm is 1000 ohm units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many kiloohms are in 1 attoohm?
1 attoohm equals 1e-21 kiloohms, using the exact defined conversion factor rather than an estimate.
How do I convert attoohm to kiloohm?
Multiply the attoohm value by 1e-21. The converter above does this instantly to whatever precision you set.
How do I convert kiloohm back to attoohm?
Use the reverse factor: 1 kiloohm equals 1e+21 attoohms. You can also use the swap control in the converter above to flip the direction instantly.
What is a attoohm?
Attoohm (aOhm) is a unit of electricity.
What is a kiloohm?
Kiloohm (kOhm) is a unit of electricity.
Is the attoohm to kiloohm conversion exact?
Yes. Both attoohm and kiloohm are defined by fixed standards rather than physical artifacts, so the factor of 1e-21 used above is exact to as many digits as you choose to display.
What's the difference between voltage, current, and resistance?
Voltage (volts) is the electrical potential difference driving current through a circuit. Current (amperes) is the rate of flow of electric charge. Resistance (ohms) is how much a component opposes that flow. They're related by Ohm's law (V = I × R), but they are distinct physical quantities, and this page converts between units of just one of them.